Alert archive / Kansas / Mesoscale Discussions in 2004
Mesoscale Discussion 982
The Storm Prediction Center issued this mesoscale discussion at May 29, 2004, 8:27 PM CDT for 15 counties in Kansas; 15 counties in Oklahoma. It was in force for 63 min.
The area
The outline as issued.
The facts
- Issued
- May 29, 2004, 8:27 PM CDT (01:27 UTC)
- Expired
- May 29, 2004, 9:30 PM CDT
- In force
- 63 min
- Issued by
- the Storm Prediction Center
All 30 counties
Butler County, KS, Chase County, KS, Chautauqua County, KS, Coffey County, KS, Cowley County, KS, Elk County, KS, Greenwood County, KS, Harvey County, KS, Lyon County, KS, Marion County, KS, Montgomery County, KS, Sedgwick County, KS, Sumner County, KS, Wilson County, KS, Woodson County, KS, Canadian County, OK, Creek County, OK, Garfield County, OK, Grant County, OK, Kay County, OK, Kingfisher County, OK, Lincoln County, OK, Logan County, OK, Noble County, OK, Okfuskee County, OK, Oklahoma County, OK, Osage County, OK, Pawnee County, OK, Payne County, OK, Washington County, OK
The radar
The Vance AFB radar (KVNX), 108 km from the middle of the area, began a volume at 01:30 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The watches that followed
Watches SPC issued over any of the same counties within four hours of this discussion.
The nearest sounding before it
Lamont, OK (KLMN), launched 00:00Z, 1.5 hours before the alert went out and 53 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 3494 J/kg
- Mixed-layer CIN
- -56 J/kg
- Mixed-layer LCL
- 992 m above ground
- 0-6 km bulk shear
- 42 kt
- 0-1 km storm-relative helicity
- 195 m²/s²
- 0-3 km storm-relative helicity
- 402 m²/s²
- Significant tornado parameter
- 7.0
- Supercell composite
- 22.4
The text
As transmitted, in the capitals the NWS used until 2016.
187 ACUS11 KWNS 300127 SWOMCD SPC MCD 300127 OKZ000-KSZ000-300230- MESOSCALE DISCUSSION 0982 NWS STORM PREDICTION CENTER NORMAN OK 0827 PM CDT SAT MAY 29 2004 AREAS AFFECTED...SOUTH CENTRAL/SERN KS...NCNTRL/CNTRL OK CONCERNING...TORNADO WATCH 322... VALID 300127Z - 300230Z ...TORNADO WATCH MAY BE REQUIRED DOWNSTREAM ACROSS PORTIONS OF SERN KS/NERN OK... ISOLATED TORNADIC SUPERCELLS CONTINUE ACROSS THE WW. THE NRN MOST TORNADIC STORM IS LOCATED OVER SUMNER COUNTY KS...THE OTHER APPROACHING THE NWRN PORTIONS OF THE OKC METRO AREA. THESE STORMS INITIATED OFF THE DRY LINE AND HAVE YET TO WEAKEN AS THEY APPROACH THE I-35 CORRIDOR. ALTHOUGH THE 00Z SOUNDING FROM OUN INDICATES A SIGNIFICANT CAP...IT APPEARS THE STRENGTHENING LLJ AND STORM SCALE PROCESSES MAY ALLOW ACTIVITY TO SPREAD INTO SERN KS/NERN OK. TORNADO WATCH MAY BE REQUIRED DOWNSTREAM. ..DARROW.. 05/30/2004 ...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT... ATTN...WFO...TSA...TOP...ICT...OUN... 35569826 38419733 38559566 37189563 35289635
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 29, 8:45 PM CDT | Mesoscale Discussion | SPC | Atchison, Brown, Clay, Cloud, Dickinson, Doniphan and 19 more | 60 min |
| May 29, 9:35 PM CDT | Tornado Watch | SPC | Atchison, Brown, Clay, Cloud, Dickinson, Doniphan and 26 more | 6 hr |
| May 29, 9:45 PM CDT | Tornado Watch | SPC | Allen, Anderson, Barber, Bourbon, Butler, Chase and 25 more | 6 hr |
| May 29, 11:23 PM CDT | Mesoscale Discussion | SPC | Allen, Anderson, Atchison, Bourbon, Brown, Butler and 50 more | 67 min |
| May 30, 2:38 AM CDT | Mesoscale Discussion | SPC | Allen, Anderson, Atchison, Brown, Butler, Chase and 21 more | 97 min |
| May 30, 9:40 AM CDT | Mesoscale Discussion | SPC | Cherokee | 3 hr |
| May 30, 10:50 AM CDT | Tornado Watch | SPC | Bourbon, Cherokee, Crawford, Linn | 8 hr |
| May 30, 12:15 PM CDT | Mesoscale Discussion | SPC | Atoka, Bryan, Choctaw, McCurtain, Pushmataha | 90 min |
| May 30, 12:35 PM CDT | Tornado Watch | SPC | Bryan, Choctaw, McCurtain, Pushmataha | 6 hr |
| May 30, 12:53 PM CDT | Mesoscale Discussion | SPC | Adair, Cherokee, Haskell, Muskogee, Sequoyah | 2 hr |
| May 30, 2:44 PM CDT | Mesoscale Discussion | SPC | Choctaw, LeFlore, McCurtain, Pushmataha | 2 hr |
| May 30, 5:53 PM CDT | Mesoscale Discussion | SPC | Choctaw, LeFlore, McCurtain, Pushmataha | 97 min |
| May 30, 6:10 PM CDT | Tornado Watch | SPC | Choctaw, LeFlore, McCurtain, Pushmataha | 5 hr |
Nearby
Mesoscale Discussions in Kansas, 2004Mesoscale Discussions in Oklahoma, 2004Every mesoscale discussion in 2004
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.